Radeon HD 5870 vs Radeon R9 M370X

Intro

Compare those specs to the Radeon R9 M370X, which features a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 113% faster than the Radeon R9 M370X overall, because of its higher bandwidth. (explain)

Radeon HD 5870		153600 MB/sec
Radeon R9 M370X		72000 MB/sec
	Difference: 81600 (113%)

Texel Rate

The Radeon HD 5870 will be much (approximately 113%) better at texture filtering than the Radeon R9 M370X. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon R9 M370X		32000 Mtexels/sec
	Difference: 36000 (113%)

Pixel Rate

The Radeon HD 5870 will be quite a bit (approximately 113%) faster with regards to FSAA than the Radeon R9 M370X, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon R9 M370X		12800 Mpixels/sec
	Difference: 14400 (113%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.